Home / 18,415.22-25,390.69-14,328.20

Finding the Fourth Proportional to 18,415.22, 25,390.69 and 14,328.20

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Solution

The fourth proportional to 18,415.22, 25,390.69 and 14,328.20 is: 19,755.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.22 : 25,390.69 = 14,328.20 : x
  2. Step 2: Convert to fraction form
    18,415.22/25,390.69 = 14,328.20/x
  3. Step 3: Cross multiply
    18,415.22x = 25,390.69 × 14,328.20
  4. Step 4: Simplify right side
    18,415.22x = 363,802,912.11
  5. Step 5: Solve for x
    x = 363,802,912.11/18,415.22
  6. Step 6: Final answer
    x = 19,755.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.